Developers can now offer digital content and subscriptions within apps and games using Amazon's 1-Click purchasing. The platform makes it easy for Amazon Appstore developers to offer digital content and subscriptions for purchase within apps and games, according to a company press release.

Top developers including ZeptoLab, Disney, Glu Mobile Inc., Storm8, Social Gaming Network, Gameloft, G5 Entertainment Inc., and top publishers such as Condé Nast, The Wall Street Journal and New York Post, have already integrated Amazon Appstore's In-App Purchasing API and are offering millions of Amazon customers in-app content and subscriptions.

"Amazon Appstore's In-App Purchasing service enables developers to generate more revenue from their apps," said Aaron Rubenson, director of Amazon Appstore. " Many of Amazon Appstore's customers have shopped with Amazon before and they trust Amazon's easy payment process, which leads to higher conversion of developers' in-app content and subscriptions."

G5 Entertainment found that by offering a product with IAP rather than other monetization types, its conversion rates and revenue increased, said Larissa McCleary, director of Marketing at G5 Entertainment, Inc., creator of Virtual City Playground and Mahjong Artifacts. "Although our experience on Amazon has always been great, we are thrilled now that IAP is available."

Read more about in-app billing.